Electrical device and plug for an electrical device

Abstract

Known pumping devices have a connection lid, a connection cap slipped over the connection lid, a hollow chamber formed between the connection lid and the connection cap, and electrical connections that extend through the connection cap into the hollow chamber. It is disadvantageous that when fuels containing water are being pumped, such as ethanol, corrosion can occur at the electrical connections and at the uninsulated cable segments that are exposed to fuel near the electrical connections, for instance at the electrical coils or flexible cables of the carbon brushes, and in the final analysis this leads to an interruption in the electrical contact and thus to failure of the pumping device. In the electrical device of the invention, corrosion of the electrical connections and of the electrical components adjoining them upstream and downstream is avoided entirely or at least greatly diminished. According to the invention, the electrical connections are each provided in separate chambers of the hollow chamber.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based on German Patent Application No. 10 2007 052 747.2 filed on Nov. 6, 2007, upon which priority is claimed.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention is based on an electrical device and a plug for an electrical device.[0004]2. Description of the Prior Art[0005]A pumping device is already known from U.S. Pat. No. 5,762,481, having a connection lid, a connection cap slipped over the connection lid, a hollow chamber formed between the connection lid and the connection cap, and electrical connections that extend through the connection cap into the hollow chamber. It is disadvantageous that when fuels containing water, such as ethanol, are being pumped, corrosion can occur at the electrical connections and at the uninsulated cable segments that are exposed to fuel near the electrical connections, for instance at the electrical coils or flexible cables of the carbon brushes, and in the...

AI Technical Summary

Benefits of technology

[0007]The electrical device according to the invention has the advantage over the prior art that the corrosion of the electrical connections and of the electrical components adjoining them upstream and downstream is avoided entirely or at least greatly diminished, because the electrical connections and the associated electrical components are each provided in chambers, separate from one another, of the hollow chamber.

Problems solved by technology

It is disadvantageous that when fuels containing water, such as ethanol, are being pumped, corrosion can occur at the electrical connections and at the uninsulated cable segments that are exposed to fuel near the electrical connections, for instance at the electrical coils or flexible cables of the carbon brushes, and in the final analysis this leads to an interruption in the electrical contact and thus to failure of the pumping device.

It is disadvantageous that this version is comparatively expensive to manufacture.

Moreover, corrosion continues to occur at the flexible cables.

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